Player not opening in MacOS

[Aniruddh-J]

Hello,

I installed mpv using Homebrew and tested if it is working with the command mpv {filename} but it doesn't work using this Python library:

player.play(video_file)
player.wait_until_playing() // or player.wait_for_playerback()

[jaseg]

I cannot help you with that since I don't have an Apple device to test this on. Here's a few suggestions of what you could try:

1. Double-check that the mpv version of your command-line mpv binary and of libmpv are the same. You can get the version of the command-line binary by running mpv --version (first line of output), and the version of libmpv by running import mpv; player = mpv.MPV(); print(player.mpv_version).
2. Make python-mpv output debug log messages, and check for any errors. You can do that by setting log_level and registering a log handler like this:

def my_log(loglevel, component, message):
    print('[{}] {}: {}'.format(loglevel, component, message.strip()))
player = mpv.MPV(log_handler=my_log, loglevel='debug')

3. Try changing the video output (--vo option in the command-line utility, vo parameter to mpv.MPV(...))
4. Make sure you don't have to set some environment variable such as $DISPLAY on your shell to get libmpv to find your display output

[frankchau93]

I'm running into the same issue. The debug logs look like it's running but nothing shows. Just a python icon that pops up but no player.

[EngineersNeedArt]

Also on MacOS (Apple Silicon). Wilder still, I hear the video playing back, do not see the window/image.

Both versions of mpv match.

From debug-level log:

[error] vo/gpu-next/vulkan: Failed to initialize macvk context, no NSApplication initialized.
[fatal] cplayer: Error opening/initializing the selected video_out (--vo) device.

[EngineersNeedArt]

Since command-line on MacOS works, ran in verbose mode. I see:

[vo/gpu/libplacebo] Failed creating instance: VK_ERROR_EXTENSION_NOT_PRESENT
[vo/gpu/libplacebo] Failed initializing vulkan instance
[vo/gpu/vulkan] Initializing GPU context 'macvk'
[vo/gpu/libplacebo] Initialized libplacebo v7.349.0 (API v349)
[vo/gpu/libplacebo] Creating vulkan instance with extensions:

Compare this to logging from Python on same OS:

[v] vo/gpu/libplacebo: Failed creating instance: VK_ERROR_EXTENSION_NOT_PRESENT
[v] vo/gpu/libplacebo: Failed initializing vulkan instance
[v] vo/gpu/vulkan: Initializing GPU context 'macvk'
[error] vo/gpu/vulkan: Failed to initialize macvk context, no NSApplication initialized.
[v] vo/gpu-next: Probing for best GPU context.

Obviously they diverge in the last two logs.

Maybe there's a clue in the above as to how the C/L handles video playback more robustly on MacOS.

[hany]

I just ran into the same issue. mpv works on the command line, but not from mpv.py. The error I'm getting:

[error] vo/gpu-next/vulkan: Failed to initialize macvk context, no NSApplication initialized.
[error] vo/gpu-next: Failed initializing any suitable GPU context!
[fatal] cplayer: Error opening/initializing the selected video_out (--vo) device.
[info] cplayer: Video: no video

System: M4 MacBook Pro
mpv version: 0.39.0

[chqzeng]

any update on this question?

[debug] vo/gpu-next/libplacebo: Spent 0.214 ms creating vulkan instance
[v] vo/gpu-next/libplacebo: Failed creating instance: VK_ERROR_EXTENSION_NOT_PRESENT
[v] vo/gpu-next/libplacebo: Failed initializing vulkan instance
[v] vo/gpu-next/vulkan: Initializing GPU context 'macvk'
[error] vo/gpu-next/vulkan: Failed to initialize macvk context, no NSApplication initialized.
[fatal] cplayer: Error opening/initializing the selected video_out (--vo) device.

system: M2 Macbook Air
mpv version: 0.39.0

[j77h]

any update on this question?

You might never find one here, as it seems to be an mpv issue.
mpv-player/mpv#12518

Also, see the comments at the end of #261
I still haven't had time to look at it since then.

[olivierfriard]

Hi,

it is finally working for me with PySide6 and Python 13.1 on a M2 Pro with Sequoia 15.3.1.
I had to remove the player.wait_until_playing() command that was blocking the play.

The Python script is here:
pyside6_mpv_player.txt

mpv version is 0.39 (installed with brew)

The log of MPV and Python are identicals.
displayvk is used instead of macvk

MPV:

[info] cplayer: ● Video --vid=1 (h264 640x480 25 fps) [default]
[v] vo/gpu: Probing for best GPU context.
[v] vo/gpu/auto: Initializing GPU context 'auto'
[v] vo/gpu/vulkan: Initializing GPU context 'displayvk'
[v] vo/gpu/libplacebo: Initialized libplacebo v7.349.0 (API v349)

mpv - Python:

[cplayer] ● Video --vid=1 (h264 640x480 25 fps) [default]
[vo/gpu] Probing for best GPU context.
[vo/gpu/auto] Initializing GPU context 'auto'
[vo/gpu/vulkan] Initializing GPU context 'displayvk'
[vo/gpu/libplacebo] Initialized libplacebo v7.349.0 (API v349)